#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
int main()
{
	int a = 0;
	int i = 0;
	for (i = 1; i < 101; i++)
	{
		a = i % 3;
		if (a == 0)
			printf("%d\n", i);
	}
	return 0;
}
